Cushion bumper for vehicles



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2 Sheets-Sheet l A. A. LlNDAUER CUSHION BUMPER FOR VEHICLES Flled Dec 50 1955 Jul 28, 1936.

A. A. LINDAUER CUSHION BUMPER FOR VEHICLES July 28, 1936.

Filed Dec. 30, 1935 2 Sheets-Sheet 2 INVENTOR. fid'auer F 1 lv/ v l Flier! 19:1

A M. w

ATTORNEY.

Patented July 28, 1936 OFFICE U N B M RiFon VEHICLES Safety Cushion Bump N Application December 30,

- Kibertt-Afmnaaher,permit. .Mich., assignor to.

er and Manufacturing Detroit, Mich.. a corporation of:

1935, Serial No. 56,604

5. Claims. (omss -ss) invention relates to'cushi'on bumpers for vehicles and theobj'ect of the i'nvention'is to provide a cushion bumper in which the bumper bar is supported both longitudinally and transversely on springs.

{Another object of the invention is'to provide a secondary cushion-arrangement which will absorb impactaf ter the springs have fb'een compressed i-' .i I" 1-: P If A'- further object of theinvention is to provide a'longitudinal spring for the bum'perbar con nected 'directly' totlie bumper bar' and provided withends 'adapted'to ride onthe support bar and also to provide springs connected to the support bar and, having a floatingbcnnection with the bumper bar whereby if either set of 'springsare broken thebumper bar will still be supported imposition. :Another object of 'theirivention is to provide an .endconnection for each end of the bumper bar and connected t'o'the "support bar whereby the ends of the bumper and support bar'smay move'fto a limited "extent' in' relation to each other-upon meetingian'obstruction.

' A further object of the'iinvention' is to provide a meansfor lubricatingthe-movable parts of the bumper so that the parts a e" free for relative ,movement'upon meeting"arr obstruction." These-objects and the several novel features of the invention are'hereiriafter more fully described and claimed and the preferred form of construction :by which these objects are; attained isshown in theaccompanyingdrawings in which Fig. 1 aplan view-of .a.cushion:bumper'em bodying my --inventionas attached to'the front end of anautomobilechassis. it, Fig. 2 is anzenlarged View taken'ron substantially line 2-;-2 of Fig. 1.. 3 5 Fig. 3 is an enlarged section .takenion line:3'3 oiFig. 1. 1 Fig. 4 is an en] of Fig. 3. Fig. 5 is an of Fig.2." Fig. -6 is" an 65 of Figg5. l i

"Fig 1? is a section taken on line 'l TofFig. 6. Fig. 8 is an enlarged section taken on line8 8 Fig. 9 is an enlarge of Fig. 3.

Fig. 10 is a section similar to Fig. 8 showing an alternative form of connection.

As shown in Fig. 1, a bumper supporting bar arged'section takenon lin'e 4-4 enlarged section taken on line 5+5 enlarged section' "taken on line d section taken on line 9-9 l'-of spring steel is provided having an arcuate p'ortion'l at the center. At each end the supporting bar I is provided with a slot 3 through which a 'bolt "4 extends and. this slot 3 will allow longitudi'nal'movement of the bar I in relation to the bolt 4 'as will be understood from Figs. 3; 8 and 9.-- The bolt 4 extends through a bracket 5-and through the inturned end 6 of the bumper bar 8 and a 'series of bolts 1 are provided for securing the bracket 5 to the inturned end. 6 of the bumper bar 8, as shown in Figs. 3 and 9. In order to lubricate this end of the support bar a mmmarmn connection [0 is provided on the bracket 5 and a channel H is formed through which the lubricant may pass to the end of the supporting bar as shown in Fig. 9. "The bumper bar 8" fits against the face of a spring bar 12 havinginturned spring ends l3 shown in Fig.1 and-a bracket [4 is connected to each inturned spring end [3' and carriesTa-pair of rollers 15 0 shown in Fig. 4 which roll on opp0site sidesoi the supporting bar I. V 'AhousingJG is provided over this bracket and lubrication fittings H are provided for each roller by which lubricant may be fed to the rollers to allow them to roll freely on the supporting bar 5 A pair of brackets l8 shown more particularly in Figs-5, 6 and T are connected to the bumperbar 8 by means of the bolts 19 which iextend thr ough the spring bar l2 and through the bumper bar}. 'Ihese brackets [8 are each providedfwith arecess 20 on opposite sides of a rib or'partition 2f and a C-shaped'steel spring 22 is attached to the support bar l by means of the;bolt-'-23 which extends through a socket 24 in which-a rubber cushion bumper 25 is secured. By 'tljis arrangement the rubber bumper 25 is positioned in the plane of the c-shaped" spring 22 immediately behind the bracket l8jand the ends of the G-shape'd spring 22 extend into the recessesfzll provided in the bracket I8 as shown. These recesses 20 allow the ends of the C-shaped spring 22"toturn thereinto as shown in dotted lines in Fig. 5 upon a heavy impact againstthe bumperfbart and, should the impactbe carried far enough. the bracket l8 will engage against the' rubber cushion 25 to further absorb theimf pact: A face} view of the structure is shown in Figi 6 and it will be noted that'the ends of the c sl iapedspring 22'db not extend intoenga'gement with the rib or partition 2| but are spaced therefrom so that the ends of the springs are free and ready to act.

By means of this construction as will be understood from Fig. 1 an impact against the bumper 55 l3 of the longitudinal spring bar [21' and the rollers in the brackets I4 will allow this movement without restriction. At the same time, the C-shaped springs 22 which are transverse to the bumper bar will be compressed and the ends thereof may move inwardly under compression as shown in dotted lines in Fig. 5. Under a heavy impact, the spring bar l2. will be moved into engagement with the arcuate portion 2 of the support bar I, and this portion 2 being arcuate j in form and being of spring steel will-further re- H sist the impact which may be carried back 'far enough so that the brackets l8gengage the-rub ber cushions 25 which in combination with the arcuate portion 2 form the secondary cushion. Should the ends of the bumper be bent, the slot 3 in the' end of the supporting bar I will allow relative movement of the inturned end 6 of the bumper barin relation to the support bar without allowing the bumper parts toIbreak apart where they areco'nnected. By this arrangement it will'be seen that-normal impacts are yieldably resisted by the longitudinal spring bar i2 and curved ends I3 and by the transverse O-shaped springs 22 whileheavier impacts will carry the bumper bar back to engagement with the arcuate portion 2 and the rubber cushions 25 and the brackets at the ends of the bumper prevent the support and; bumper bars from coming apart at theends. v a a l -An alternative -form of end connectionof bumper bar-to the-suppQrtbar-is shown in Fig. 10 in'which the inturned end B of the bumper bar is provided with an aperture 26' in which'a latch -2;lis positioned having an angular face 28. latch is urged inwardly by means of the fiat springl'Q-which is secured to the inturned end 6 of thebumper bar by means otthe screw 30. In this casethe support bar I is provided with anaperture 3| having an n angular face 32 so that upon collision if the support bar 'is-movedto the right in relation to the bumper bar and bracketfi the latch 21 will be pressed into the aperture 3| to lock the support bar to the bumper bar but upon return movement the angular face 32,engages the angular face 25 of the latch 21 and forces the latch outta-the position shownin full lines in Fig. 10; 'Thisis also useful-,instraightening the bumper parts after a.--c0ll isi0n in that the support bar may be forced back to the, position shownin Fig. 10 without 6 of thebumperbar 8.

removing thebracket 5-from theinturned end From the foregoing description it becomes evident that the device very simple and efficient in operation will absorb impacts of considerable extent and in absorbing animpact will not break tap-pieces and drop offfrom the chassis under the wheels of the automobile.

.Having thus fully described my invention/it s utilityw and mode of operationgwhat I claim and desire to secure by Letters Patent of the United 3, In a fcushion bumper for vehicles, aspring meta S p a mpe ba u dtq h ends ot .the'spring metal support bar, .a longi tudinalspringbar extending in substantiallythe same plane as thebumper and support bars and attached to -th e bilmper bar, a bracket on each ends of the'rspeptive ti-ishaped .spring member,

' site sides of the support bar, a pair oi transverse end of the longitudinal spring bar, a pair of rollers in each bracket engaging on opposite sides of the support bar, a pair of transverse O-shaped spring members secured to the support bar and a bracket secured to the bumper bar for each 5 transverse spring member, each bracket being provided with recess'es 'to'receive the opposite.

the "recesses being shapedto allow the ends of the c-shaped springs to turn inwardly therein upon movement of the bumper bar toward the support bar. I r

2. In a cushion bumper for automobiles, a

- spring metal support bar, a bumper bar secured to opposite en'dsi thereof, a, longitudinal spring bar secured totthe bumper bar and having in-' turned ends extending toward the support bar, a bracket-connectedtojeach end of the spring bar, a pair of rollers in each bracket riding on oppospring membersv secured to the support bar and a bracket securedyto. the bumper bar. for each transverse spring member and providinga'seat for the ends of the respective transverse spring member.

a V. r 25 3'. In a cushion bumper forvehicles, a support bar; a bumper bar,- a longitudinal spring secured to;.the bumper bar ,a bracket secured to each end of the longitudinal spring and a pair of rollers ineachbracket=ridingonflopposite sides of W the support bar," the arrangement being such that; upon impactagainstthe bumper bar the longitudinal spring bar :is. compressed-:to'move the rollers longitudinally of-the support bar, a pair o tic-shaped springs supported between the 35 support; bar and: bumper bar, a bracket for each spring provided with recesses to receive the oppo-' site ends of the respective C-shaped spring, the recesses being shaped. toallow the ends of the Q-shaped springsgto turn inwardly therein upon 4 movement of the :bumper bar'toward the sup portbarr v 4 In a cushion bumperjfor'vehicles', a support bar, a bumper bar... supported on the. support 'bar and extending in-spaced relation ,withthe support 4 bar,':a transverse (Ir-shaped spring'member. be-' 'tween' the-supportbar, and bumper bar and-securedtothe; support bar and: the ends of the VG -shaped spring member terminating behind'the port bar, a bracketisecureii to the bumper for each transverse spring member, 'eachl'bracket being'provided with recesses to receive the opposite ends of the respective C-shaped springmem+ her, the recesses-being shaped to allow the ends of the c-shaped spring members to turn inwardly therein upon movement of thebumper bar to wardthe support bar. u V r V ALBERT A. LINDAUER. 1 1 

